The various substance abuse treatment programs which are available to alcohol and drug addicted persons in Denison can vary in many various ways. Quite a few alcohol and drug abuse rehab services take place in a residential or inpatient setting, where clients remain the entire time they are in rehabilitation which provides a more therapeutic rehab setting. Others offer substance abuse rehab services on an outpatient basis which provides a sense of versatility, although outpatient facilities may not be a suitable drug and alcohol abuse rehab service for people in Denison who are having difficulties with serious drug or alcohol addiction difficulties. Whether or not inpatient or outpatient alcohol and drug abuse rehab services are chosen, there are also different amounts of time that men and women will be required to remain in the alcohol and drug treatment program. For example, many short-term programs provide programs for a month or less, while long-term centers will require at least a 90 day stay.